Candela to lux free online calculation

How to convert luminous intensity in candela (cd) to illuminance in lux (lx).

You can calculate lux from candela and distance from light source.

You can't convert candela to lux, since lux and candela do not represent the same quantity.

Candela to lux calculation

Candela tp lux calculation with distance in feet

The illuminance Ev in lux (lx) is equal to 10.76391 times the luminous intensity Iv in candela (cd),

divided by the square distance from the light source d2 in square feet (ft2):

Ev(lx) = 10.76391 × Iv(cd) / (d(ft))2


lux = 10.76391 × candela / square feet


lx = 10.76391 × cd / ft2

Candela to lux calculation with distance in meters

The illuminance Ev in lux (lx) is equal to the luminous intensity Iv in candela (cd),

divided by the square distance from the light source d2 in square meters (m2):

Ev(lx) = Iv(cd) / (d(m))2


lux = candela / square meters


lx = cd / m2

Lux to candela calculation »

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